Domain security tools check email authentication (SPF, DKIM, DMARC), DNSSEC, and TLS configuration. Some focus on a single check; others bundle many. They differ in whether they handle bulk domains and how they price.
Tools to consider
An unranked list of common options in this category, described factually. Pricing models change over time — confirm current terms with each provider.
| Tool | Type | Pricing model |
|---|---|---|
| MX Toolbox | DNS/email diagnostics | Free tier + subscription |
| SSL Labs | TLS configuration grading | Free, single-domain |
| SecurityTrails | DNS/domain intelligence | Subscription |
| NexGenData Domain Security Posture Checker (this site) | SPF/DKIM/DMARC/DNSSEC/TLS in one, bulk | Pay-per-result, $5/mo free credit |
Where the NexGenData actor fits
The NexGenData actor checks SPF, DKIM, DMARC, DNSSEC, MX, and TLS in one pass and returns a posture score per domain as JSON, in bulk, on a pay-per-result basis — useful for vendor-risk and due-diligence portfolios.
Sample input
{
"domains": [
"example.com",
"acme.com"
]
}Sample output
{
"domain": "example.com",
"spf": true,
"dmarc": "reject",
"dnssec": false,
"tlsVersion": "1.3",
"postureScore": 82
}Try it
Open the actor on Apify → Pay-per-result, $5/month free credit, no subscription.
Step-by-step guide: read the buyer guide. More tools in the cluster hub.
FAQ
What does it check?
SPF, DKIM, DMARC, DNSSEC, MX, and TLS, summarized into a posture score.
Can it do many domains at once?
Yes — pass a list of domains.
Is it useful for vendor risk?
Yes — score a portfolio of vendor domains in one run.
What does it cost?
Pay-per-domain on Apify with $5/month free credit.